From: Magnus Damm Date: Thu, 28 Apr 2011 16:34:32 +0000 (-0700) Subject: Input: sh_keysc - switch to threaded IRQ handler X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=2dfb9a85ecb86f00b085d6fca7d4bb8dc6764710;p=linux-beck.git Input: sh_keysc - switch to threaded IRQ handler Update the KEYSC driver to make use of threaded IRQs with IRQF_ONESHOT to improve interrupt latency. The driver is using udelay() in the ISR to make sure the hardware has stabilized. Without using interrupt threads this delay may affect the latency of the rest of the system. Also pass dev_name() as string for /proc/interrupts. Signed-off-by: Magnus Damm Signed-off-by: Dmitry Torokhov --- diff --git a/drivers/input/keyboard/sh_keysc.c b/drivers/input/keyboard/sh_keysc.c index 429ac2b77438..66eea50fccf5 100644 --- a/drivers/input/keyboard/sh_keysc.c +++ b/drivers/input/keyboard/sh_keysc.c @@ -231,7 +231,8 @@ static int __devinit sh_keysc_probe(struct platform_device *pdev) input->keycodesize = sizeof(pdata->keycodes[0]); input->keycodemax = ARRAY_SIZE(pdata->keycodes); - error = request_irq(irq, sh_keysc_isr, 0, pdev->name, pdev); + error = request_threaded_irq(irq, NULL, sh_keysc_isr, IRQF_ONESHOT, + dev_name(&pdev->dev), pdev); if (error) { dev_err(&pdev->dev, "failed to request IRQ\n"); goto err3;